下午想要安裝 scrapy框架時報錯，如圖：
網上查了一下：因為網絡差導致安裝超時，所以用安裝時指定源的方法可以解決：
pip install scrapy -i https://pypi.tuna.tsinghua.edu.cn/simple
紅色的字體表示要安裝的模塊
python pip install 報：HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.錯誤
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Python報錯ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
解決pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
pip安裝超時問題-pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
更改pip源 / 解決 ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read
selenium+python自動化83-pip安裝selenium報Read time out HTTPSConnectionPool(host='pypi.python.org' port443）
pip安裝超時：Read timed out.